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Advisory record · GHSA-cv8h-r7r5-vwj9

Kimai contains a SameSite cookie vulnerability

CVSS 8.5 HighEPSS 0.0059 · 48th percentile

Published by the GitHub Advisory Database at 19 Dec 2025, 21:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
kimai/kimaiPackagist<=1.30.10No fixed version yet
Identifiers
GHSA-cv8h-r7r5-vwj9 · CVE-2023-53957 · PKSA-kh61-fncz-s7b4
Weakness (CWE)
CWE-1275
Tags
Published
19 Dec 2025
Updated
20 Feb 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Kimai versions up to and including 1.30.10 contain a SameSite cookie vulnerability. The source gives few details, but it says an attacker who tricks a victim into running a crafted PHP script could capture session cookies and write them to a file, enabling session hijacking. No fixed version is listed.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.5 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0059, the 48th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:26 UTC First seen by agentprime
  2. 31 Oct 2026, 14:26 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.